S: (n) badge (an emblem (a small piece of plastic or cloth or metal) that signifies your status (rank or membership or affiliation etc.)) "they checked everyone's badge before letting them in"
S: (n) entity (that which is perceived or known or inferred to have its own distinct existence (living or nonliving))
S: (n) positive identification (evidence proving that you are who you say you are; evidence establishing that you are among the group of people already known to the system; recognition by the system leads to acceptance) "a system for positive identification can prevent the use of a single identity by several people"
S: (n) identification (evidence of identity; something that identifies a person or thing)
S: (n) evidence (an indication that makes something evident) "his trembling was evidence of his fear"
S: (n) indication, indicant (something that serves to indicate or suggest) "an indication of foul play"; "indications of strain"; "symptoms are the prime indicants of disease"
S: (n) communication (something that is communicated by or to or between people or groups)
S: (n) instinct, inherent aptitude (inborn pattern of behavior often responsive to specific stimuli) "the spawning instinct in salmon"; "altruistic instincts in social animals"